The question mark

- Question marks are used at the end of a direct question, as either the final punctuation, or within the sentence. There is no space between the question mark and the previous word.

How many students are in Sarah’s class?
What did you say? Neither Sarah nor I could hear you.

- Indirect questions and requests do not use a question mark, but instead a period. Rhetorical questions should also be written with a period because the speakery does not expect an answer.

Would you please do the dishes.
I wonder how I did on the exam.
Why not.
Are you crazy!